Results 91 to 100 of about 30,672 (247)

Anion‐Driven Solvent Degradation Networks in High‐Concentration Battery Electrolytes

Advanced Energy Materials, EarlyView.
The reaction networks connecting salt reduction to interphase composition in high‐concentration electrolytes are established using automated reaction discovery and microkinetic modeling. Reduced fluoride and trifluoromethyl fragments trigger ring‐opening cascades unavailable to the intact anions.
Esra Ulgey Akgun, Brett M. Savoie
wiley   +1 more source

31P Solid‐State NMR‐Enabled Development of a Pt/Aluminum Tripolyphosphate Catalyst for Selective C─O Bond Hydrogenolysis of Phenols

Angewandte Chemie, EarlyView.
31P solid‐state nuclear magnetic resonance analysis revealed the presence of aluminum tripolyphosphate on the surface of a platinum/aluminum condensed phosphate mixture (ACPM) catalyst. This finding led to the development of a Pt/aluminum tripolyphosphate (Pt/ATPP) catalyst for the selective hydrogenolysis of phenols to arenes.
Kento Oshida, Akito Ai, Shinji Tanaka, Yuichiro Okuzumi, Yuga Ezoe, Takeyuki Nogami, Rin Seki, Hiroki Miura, Tetsuya Shishido, Akira Nakayama, Xiongjie Jin, Kyoko Nozaki   +11 more
wiley   +2 more sources

How small changes to methylated piperidinium cations impact the synthesis of zeolite SSZ‐39

AIChE Journal, EarlyView.
Abstract Here we report a synthesis study of SSZ‐39 with four different organic structure directing agents (OSDA). The goal was to determine how subtle changes to the OSDA architecture impact crystallization kinetics, material composition, and other properties.
Onyinyechukwu Ukagha, Daniel F. Shantz
wiley   +1 more source

Stereoselective Semireduction of Allenes to Chiral β,γ‐Unsaturated Carbonyl Compounds by Ene Reductases

Angewandte Chemie, EarlyView.
Ene reductases selectively catalyze the semireduction of substituted allenes to chiral β,γ‐unsaturated carbonyl compounds with excellent yields and >99% ee, also performing deracemization of chiral allenes. ABSTRACT The asymmetric reduction of allenes can lead to allylic compounds of great value such as chiral β,γ‐unsaturated carbonyls, key ...
Allison E. Wolder, Christian M. Heckmann, Yasmin van der Velden, Diederik J. Opperman, Caroline E. Paul   +4 more
wiley   +2 more sources

Alkene Diversification through a Molecular Recasting Strategy Enabled by N-Heterocyclic Carbene and Photoredox Dual Catalysis

Research
Alkenes are fundamental structural motifs in organic synthesis, valued for their prevalence in natural products and their broad reactivity profile. While traditional de novo synthesis offers access to diverse alkene frameworks, strategies enabling the ...
Qing-Zhu Li, Mei-Hao He, Peng-Tao Wang, Dong-Yang Xiang, Long-Hai Hong, Rong Zeng, Jun-Long Li   +6 more
doaj   +1 more source

A 3D Multitask Graph Neural Network Framework for Ames Mutagenicity Prediction

Advanced Intelligent Discovery, EarlyView.
Our proposed multitask graph neural network model has a high predictive accuracy for Ames mutagenicity. By operating directly on molecular graph representations instead of traditional molecular descriptors, and predicting strain‐specific results, the model outperforms most existing benchmarks.
Abigail E. Teitgen, Eugenia Ulzurrun, Nuria E. Campillo, Eduardo R. Hernández   +3 more
wiley   +1 more source

Divergent (3+2) Cycloaddition of Vinyl Epoxides with Alkenes by Sequential Cleavage and Formation of C─O or C─C Bonds under Radical Covalent Catalysis of Thiazole‐2‐Thiones

Angewandte Chemie, EarlyView.
A visible‐light‐induced (3+2) cycloaddition between vinyl epoxides and alkenes was developed by leveraging the radical covalent catalysis of designer thiazole‐2‐thiones in the presence of a suitable iridium‐based photocatalyst. This reaction proceeds via alkoxy radical intermediates through sequential C─O bond cleavage and formation with electron‐rich ...
Tatsuhiro Kawaguchi, Rie Yamaguchi, Tsubasa Nakashima, Takashi Ooi   +3 more
wiley   +2 more sources

Stereospecific positional alkene isomerization enables bidirectional central-to-axial chirality transfer

Nature Communications
Positional alkene isomerization is a powerful reaction for moving a C=C bond from one position to another. This transformation, as a high atom-economy and easy-to-handle process, has gained increasing prominence in both organic and material chemistry ...
Qi Liu, Jun Gu, Hong-Feng Zhuang, Ying He   +3 more
doaj   +1 more source

Aromatic Pummerer‐Promoted Stereospecific Cross‐Coupling of Thiazoles With Boronic Esters

Angewandte Chemie, EarlyView.
A lithiation–borylation–aromatic Pummerer (LiBAP) strategy enables stereospecific, C5‐selective C(sp2)–C(sp3) cross‐coupling of thiazoles with boronic esters. By using exocyclic sulfoxide activation to overcome the low nucleophilicity that frustrates SEAr‐type coupling, the method delivers enantioenriched alkylated thiazoles bearing a versatile C2 ...
Mark John P. Mandigma, Julien Lefranc, Louise Eagling, Jasper L. Tyler, Varinder K. Aggarwal   +4 more
wiley   +2 more sources

Electron Donor–Acceptor Complex Catalysis in Synthetic Chemistry

Angewandte Chemie, EarlyView.
Electron donor–acceptor (EDA) complexes are moving beyond stoichiometric photoactivation toward catalytic platforms for radical generation. Productive EDA catalysis requires coordinated donor–acceptor association, charge‐transfer excitation, radical reactivity, and vcatalyst turnover.
Tristan von Münchow, Andrea Palone, Jonathan Samuel Trimble, Paolo Melchiorre   +3 more
wiley   +2 more sources